为了使电力系统通信设备的呼叫装置更加使用方便工作可靠，我们研制了以按键电话机发出双音频呼叫信号进行选择接收的音频选号装置。

In order to improve the ringing method of telephone used in power systems, a type of selective calling device using audio frequency has been developed.

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例如，假设实时数据包含来自客户呼叫中心的音频反馈。

For example, assume that the real-time data contained audio feeds from customer call centers.

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我们分析了所有音频，包括无线呼叫。

We digitize all the audio, including the radio calls.

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